{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "191061563",
    "entityType": "Track",
    "nonce": "0xc400b4267169a2d54da83856d70f891db7782f2c4b73bd1975d39ab5199ff874",
    "signature": "0xfdc41f00bc3bb4fa3204893576378a60110e7fcd0e14682bc470f053489944f3036b75379b4ef6e2f5895f19691084a461f9737a66f998b98207761f3f0c58b91c",
    "signer": "0x4A3D09CdfD42dE4C57dc67B09a40B5d9172bD69f",
    "userId": "787102835"
  }
}